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To: maceng2 who wrote (64049)	3/1/2007 2:23:08 AM
From: Elroy Jetson	Read Replies (2) \| Respond to of 116555

Gasoline which kills oxygen and fuel tank level sensors contains excess sulfur, also known as sour gasoline. Its amusing for me to read ITV claiming the problem might be Ethanol, which has absolutely no effect on oxygen or fuel tank level sensors. When refineries accidentally produce a batch of high sulfur fuel, from a high-sulfur (sour) crude, they will sell this off at a discount to electrical generators or others whose equipment can use high sulfur fuel. Obviously some smarmy fellow sold tank loads of this sour gas to Tesco at a large mark-up, which still represented a bargain for Tesco - and Tesco screwed their customers. The free market in action! Ha, ha. Some high technology refiners, like Chevron need to remove all of the sulfur prior to refining, because the sulfur would poison the specialty catalysts used in the refining process. As a consequence its impossible for this type of refinery to produce a batch of "sour gasoline". For the curious, the sulfur is removed from crude oil by "roasting" the crude at roughly 600 degrees F while bubbling hydrogen gas through the crude. At this temperature, all sulfur readily becomes Hydrogen Sulfide. The Hydrogen Sulfide is then converted with a catalyst into water and large piles of bright yellow sulfur, which is sold to chemical companies. The Hydrogen comes from the crude oil in a later stage of the refining process. .